600 Pcs M3 M4 M5 Metric Screws Bolts and Nuts and Washers Assortment Kit, Button
Thread Size M3, M4, M5. Size M3, M4, M5. The hex socket cap head design can be easily installed with a hexagonal wrench, and it is not easy to slip out. Hex nuts can make your installation more precise, fasten better, and carry larger loads.